Spark Earth Science Final 1st Semester

Front

What is the Big Bang Theory?

Back

The Big Bang Theory states that at one time, the entire universe was confined to a dense, hot, supermassive ball, which then expanded to form the universe as we know it.

Front

What causes the day-night cycle on Earth?

Back

The day-night cycle on Earth is caused by the rotation of the Earth on its axis, where only the part of the Earth lighted by the Sun experiences daytime.

Front

What is the epicenter of an earthquake?

Back

The epicenter of an earthquake is the point on the surface of the Earth directly above the focus, where the seismic waves are first felt.

Front

Who was Edwin Hubble?

Back

Edwin Hubble was an astronomer who discovered that other galaxies existed beyond our own galaxy, leading to the understanding of an expanding universe.

Front

What does a blue shift of light from a star indicate?

Back

A blue shift of light from a star indicates that the star is moving closer to Earth.

Front

What is the Nebular Theory?

Back

The Nebular Theory suggests that the solar system formed from a rotating cloud of gas and dust, which collapsed under its own gravity.

Front

What is the significance of the Earth's rotation?

Back

The Earth's rotation is significant because it causes the day-night cycle and affects weather patterns and ocean currents.

Front

What is the focus of an earthquake?

Back

The focus of an earthquake is the point within the Earth where the rock begins to break and the first motion occurs.

Front

What is the relationship between the Earth’s revolution and seasons?

Back

The Earth's revolution around the Sun, combined with its axial tilt, causes the changing seasons throughout the year.

Front

What is the Law of Universal Gravitation?

Back

The Law of Universal Gravitation states that every mass attracts every other mass in the universe, and the force of attraction is proportional to the product of their masses and inversely proportional to the square of the distance between them.